[FS#899] HG556a serial 31301 (model C) doesn't boot with C version fw, but boots with B version

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - Diego (ifsnop) 

Attached to Project - LEDE Project
Summary - HG556a serial 31301 (model C) doesn't boot with C version fw, but boots with B version
Task Type - Bug Report
Category - Base system
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - lede-17.01
Due in Version - Undecided
Due Date - Undecided
Details - Current firmware (17.01.2) and previous (17.01.1) don't boot in a HG56BZRB VER.A, Serial 31301xxxx. Don't boot means that router gets the default ip, and after three seconds reboots in a loop.

As per Openwrt wiki (https://wiki.openwrt.org/toh/huawei/hg556a) this serial is from the C version.

Using a 'B' firmware version makes the device boot, but without wifi.

Main difference is that B version has an atheros wifi chipset and C version has a Ralink wifi chipset. 

Also, openwrt 15.05.1 for model C boots without wifi.

So, to sum up:

Boots without wifi:
openwrt-15.05.1-brcm63xx-generic-HG556a_C-squashfs-cfe.bin
lede-17.01.2-brcm63xx-generic-HG556a-B-squashfs-cfe.bin

Stuck in a loop, (boot+reset):
lede-17.01.2-brcm63xx-generic-HG556a-C-squashfs-cfe.bin





OpenWrt Chaos Calmer 15.05.1 / LuCI 15.05-188-g87e9837 Release (git-16.043.44305-e2f9172) 

Supply the following if possible:
 - Device problem occurs on
 - Software versions of LEDE release, packages, etc.
 - Steps to reproduce
   



More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=899